MBP 14" M1 Pro battery health fallen away

[olisones]

Hi all,

For some reason, in the past two weeks my MBP 14" M1 Pro's battery life has dropped considerably and I'm not sure why. I was getting around 2-3 days of usage before having to plug in, but recently I'm not even getting a day's worth of charge before having to plug in. I was running 12.3 (just upgraded to 12.5 yesterday but no real difference has been seen) which I know caused some issues, but there's nothing in Activity Monitor to suggest something is sucking power more than anything else.

Is there any sort of diagnostics I can run to see what might be up?

Battery condition is at Normal at 94%, with 154 cycles. Was purchased in November last year.

 

[appltech]

Check /Library/LaunchAgents; /Library/LaunchDaemons; ~/Library/LaunchAgents for unfamiliar plist items. Remove if there're any that you don't recognize.

And maybe because of some background activities like iCloud copying, backups, syncing, etc.

 

[Mike Boreham]

Does Activity Monitor > Energy tab > 12 hr Power give you any clues?

Don't know what the units are but it might help.

 

[olisones]

Safari seems to be highest on the list at the moment.

 

[jav6454]

Safari seems to be highest on the list at the moment.

What is Safari doing? Any sites with render heavy elements?

 

[olisones]

There doesn't seem to be and I haven't changed my browsing habit since this begin - some news sites and youtube throughout the day. I can't figure out why the drop off is occurring. Could it be the hotter weather? I know that can affect battery life... battery temp is currently 35.3c

 

[NT1440]

This is the same as the iPhones (or any other lithium polymer battery). The health will drop slightly during its “break in time” then will stay near that for years.

It’s not a linear degradation, (meaning dropping X% in 2 weeks means 2 times X% in 4) so don’t worry about it.

If you do a search you’ll see this is likely THE most asked question on this entire site across all the products. Enjoy your device, stop looking at the battery more than every 6 months or so.

 

[olisones]

I understand the health drops away slightly, but going from having 2 - 3 days of battery power, not having enough before the end of the day seems extreme, even when taking into account gradual degradation. For instance, My battery was fully charged at 10am this morning. It's now 7pm here and it's at 22%. It just doesn't seem right.

 

[BanditoB]

Perhaps something went wrong with the Monterey 12.5 update on your system. Try reinstalling MacOS to see if that addresses the shorter than usual battery life that you are experiencing.

 

[NT1440]

I understand the health drops away slightly, but going from having 2 - 3 days of battery power, not having enough before the end of the day seems extreme, even when taking into account gradual degradation. For instance, My battery was fully charged at 10am this morning. It's now 7pm here and it's at 22%. It just doesn't seem right.

Wow, rereading yea it seems like a pretty dramatic impact on battery life (I was thinking you were concerned about lifespan, that’s my fault).

I know the Apple silicon macs don’t have an nvram reset (previously a “pram” reset) but I seem to recall holding the power button down for a full 30 seconds might have a similar effect?

Try that and see if the battery life tomorrow is improved. Not much more to suggest as I’m not gonna be able to get into Apple Silicon myself until the m3’s at this rate.

 

[jav6454]

This is the same as the iPhones (or any other lithium polymer battery). The health will drop slightly during its “break in time” then will stay near that for years.

It’s not a linear degradation, (meaning dropping X% in 2 weeks means 2 times X% in 4) so don’t worry about it.

If you do a search you’ll see this is likely THE most asked question on this entire site across all the products. Enjoy your device, stop looking at the battery more than every 6 months or so.

Yeah, but that's for overall battery life, not time before recharge.

 

[Mike Boreham]

I know the Apple silicon macs don’t have an nvram reset (previously a “pram” reset) but I seem to recall holding the power button down for a full 30 seconds might have a similar effect?

I have not seen that method (link?). The usual advice is shut the machine down for 30 seconds then reboot. (eg this article). Cant find anything official from Apple.

 

[BanditoB]

I believe that holding the power button down for 10 seconds simply forces a hard reset. It's really for use if the computer locks up and you cannot shut down normally.